|
General |
|
|---|---|
| Name | Silver sulfide |
| Chemical formula | Ag2S |
| Appearance | Black cubic crystal |
|
Physical |
|
| Molar mass | 247.8 g/mol |
| Melting point | 1098 K (825 °C) |
| Boiling point | ? K (-? °C) |
| Solubility | 8.5-15g in 1L water |
|
Thermochemistry |
|
| ΔfH0gas | ? kJ/mol |
| ΔfH0liquid | ? kJ/mol |
| ΔfH0solid | -32.6 kJ/mol |
| S0gas, 1 bar | ? J/mol·K |
| S0liquid, 1 bar | ? J/mol·K |
| S0solid | 144.0 J/mol·K |
|
Safety |
|
| Ingestion | ? |
| Inhalation | May cause irritation |
| Skin | May cause irritation |
| Eyes | May cause irritation |
| More info | [1] |
|
SI units were used where possible. Unless otherwise stated, standard conditions were used. |
|
Silver sulfide (or Silver sulphide in British English), Ag2S, is the sulfide of silver. It is black and constitutes the tarnish that forms on silver when exposed to the hydrogen sulfide of the atmosphere. When formed on electrical contacts operating in an atmosphere rich in hydrogen sulfide, long filaments known as Silver Whiskers can form.
